About Speed: 8GB/16GB/32GB-Class 10 SDHC 64GB/128GB/256GB-Class 10 SDXC About capacity: 16GB=approximately 14GB-15GB 32GB=approximately 28GB-30GB 64GB=approximately 58GB-59GB 128GB=approximately 119GB-120GB This is calculation difference between manufacturer and our PC, please Google 'Memory card capacity' to get more information. About Package: Original SAMSUNG Card *1